condition mean min max 4 h after light 4235.0 4235.0 4235.0 8 h after light 3601.3 3324.8 3877.8 12 h after light 3586.4500000000003 2987.3 4185.6 4 h after dark 3308.1000000000004 2932.3 3683.9 8 h after dark 2940.7 2779.3 3102.1 12 h after dark 3232.05 2471.0 3993.1